Rectangular Etched
Why Silicon Wafers are circular?.?
Why are silicon wafers always circular in shape?. Is it because it has least wastage after etching the dies?. I see that we have a die, the edges of the circular wafer are always covered with partial dies. This is a lot of wastage, so why not the wafers be rectangular or squarish. I beleive there will be more wastage of die space if it is squarish/rectangle. Please confirm this.
If there is any other reason please let me know.
It is the way they are ultra-purified; a process called zone-melting. Cylindrical rods are the most efficient way to more evenly distribute the heat. Check out wikipedia.org
 |
 Rectangular Etched Arm ST Reading Glasses 300 R6202  US $9.95
|
 Rectangular Etched Arm ST Reading Glasses 200 R6202 US $9.95
|
 Rectangular Etched Arm ST Reading Glasses 225 R6202 US $9.95
|
 Rectangular Etched Arm ST Reading Glasses 250 R6202 US $9.95
|
Categories: Glasses